EXPERIMENTAL STRESS ANALYSIS OF GEAR TOOTH USING FEM

Author’s Name : Arakala Harish

Volume 04 Issue 04  Year 2017  ISSN No:  2349-3828  Page no: 5-8

Abstract:

Gears are the most common means for transmitting the power in the modern dynamic machines. Gears are used to change the speed and power ratio as well as direction between an input and output of the line shaft. The constant pressure to build less expensive, quieter running, light weight, and more powerful machinery has resulted in a steady improvement of gear designs. Despite having high cost, complicated manufacturing, need of precise alignment of shafts and lubrication, the gear drives are preferred over other power transmission drives. One of the important reasons of preference being that of efficiency which is very high in gear drives, even up to 99% in case of spur gears. Spur gears are the most simplest of the gear drives having teeth cut parallel to the axis of the shaft. In the present study a “spur gear is investigated using a two dimensional finite element model”. The two dimensional model offers significant advantages for dynamic gear analysis. The gear teeth are analyzed for different operating speeds. Displacements, stress distributions and strains were investigated using finite element analysis software “ANSYS 12 Mechanical APDL”. The emphasis of this study was to predict the displacements, strains and stress distributions for a spur gear tooth. The gear tooth model was generated in ANSYS 12 APDL package. Various mesh configurations were obtained in the meshing section of the package. The effect of rotational speed on dynamic stress was also studied and compared with the work of reference [4] for the same specifications. The obtained results show a good degree of agreement with the results of reference.

Keywords:

Spur Gear,ANSYS 12 ,APDL, Bending Stress, Finite Element Modeling

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